Interesting that the notes written Eb are accompanied by a G7#5 chord. Should they be a D#?
– TimMar 5 '15 at 16:41

@Tim Seeing as the E♭ resolves down to D, I'd say that E♭ is correctly spelt, and that the chord symbol is wrong. I'd analyse it as G ♭13. The G root resolves to C, so it may fairly be taken as a dominant chord. F is there, so, dominant 7th. The E♭ is above the 7th and may thus be analysed as the 13th.
– Rosie FOct 6 '18 at 8:59

It means to use hold down the damper pedal until the end of the dash. The effect is that every note you play while the pedal is held down is sustained.

There are actually a few variations of this notation with another popular form of it shown here. The idea behind the other common form is to show where you press the pedal (the PED) and where you release the pedal (the *).